Get all contact lists in your Apollo account. Lists are collections of saved contacts.
AI agents call get_lists to retrieve information from Apollo Io MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves contact list metadata from the Apollo.io platform without creating, modifying, deleting, or executing any operations. It is a straightforward data retrieval operation with no side effects.
From the tool's definition Tool name and description indicate 'Get all contact lists' and 'Lists are collections of saved contacts' — retrieving/querying existing data without modification or deletion.
Attacks that exploit this kind of access
Get all contact lists in your Apollo account. Lists are collections of saved contacts. It is categorised as a Read tool in the Apollo Io MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Apollo Io MCP Server MCP server in PolicyLayer and add a rule for get_lists: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Apollo Io MCP Server. Nothing to install.
get_lists is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_lists rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_lists. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_lists is provided by the Apollo Io MCP Server MCP server (masridigital/apollo.io-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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